package i_Inst;

import mips.Decoder;
import mips.PC;
import mips.Register;

public class Slti {
	public static void setLessThanImm(int destination,int source,int constant){
		int rs = Register.registers[source];
		if(rs < constant)
			Register.registers[destination] = 1;
		else
			Register.registers[destination] = 0;
		
		System.out.println("PC value now is : " +Decoder.toBinary(PC.pc));
		
		System.out.println("PC value :"+ Decoder.toBinary(PC.pc)+" sent to The instruction memory to read address..");
		
		System.out.println("Instuction memory sending Instruction[25:21] : "+Decoder.AddzerostoLeft(Decoder.toBinary(source)+"",5)+" to Registers @ read Register1");
		System.out.println("CONTROL sends RegDst to mux with value 0 ");
		System.out.println("CONTROL sends RegWrite with value 1 ");
		System.out.println("Instuction memory sending Instruction[15:11] : "+Decoder.AddzerostoLeft(Decoder.toBinary(destination)+"",5)+" to Registers @ write Register");
		System.out.println("Register number  read now is : " + Decoder.AddzerostoLeft(Decoder.toBinary(source)+"",5));
		System.out.println("Register number  (Destination) is : " + Decoder.AddzerostoLeft(Decoder.toBinary(destination)+"",5));
		
		System.out.println("Instuction memory sending Instruction[15:0] to Sign Extend...");
		System.out.println("The constant after Sign Extend: " + Decoder.AddzerostoLeft(Decoder.toBinary(constant)+"",32));
		
		System.out.println("Instuction memory sending Instruction[31:26] to CONTROL,Instruction[31:26] having : "+ "op code is sent");
		System.out.println("CONTROL send ALUSrc to ALU CONTROL carrying the value 01 to the mux...");
		System.out.println("The mux selects 1 as the second source...");
 
		
		System.out.println("Register 1 sends first source value : "+ Decoder.toBinary(source) + " Second Source value : " + Decoder.toBinary(constant) + "  to ALU");
		System.out.println("ALU is doing the 'Set Less Than Immidiate' operating now...");
		System.out.println("Result is ready :" + Decoder.toBinary(Register.registers[destination]));
		System.out.println("CONTROL send MemtoReg carrying the value 0 to the mux...");
		System.out.println("Sending to the mux...");
		System.out.println("Mux selection is 0,Alu result : "+ Decoder.toBinary(Register.registers[destination]) +" is sent now to the registers @ write data");
		System.out.println("Register : " +  Decoder.AddzerostoLeft(Decoder.toBinary(destination)+"",5) + ",have value now : " +Decoder.toBinary(Register.registers[destination]));
		
		System.out.println("PC value sent to Add");
		PC.pc +=4;
		System.out.println("pc value now is incremented by 4 and passed to the mux :"+Decoder.toBinary(PC.pc)+",selection 0 occured");
		System.out.println("Mux sent back to PC");
		System.out.println("New value of PC now is : " + Decoder.toBinary(PC.pc));
		System.out.println("Executing next Instruction....");
	}
}
